I installed one for a customer a few months ago. Much easier to tune than other systems I've installed. I'm using a Holley Dominator setup for my project. A lot more flexibility than comparable offerings from FAST and Edelbrock. The ez efi from FAST isn't a bad choice for you either, but the Holley stuff has worked well for me.

The Holley Hp kits are nice and lots of adjustability (like cold starts and self tuning). you can also run some power adders with it too, make a plan of future upgrades so you can make sure you have enough inputs/outputs (may need a dominator ) . if you are looking for the fast stuff the xfi sportsman has some reasonable features (laptop programming) but the Xfi 2.0 is a better system. Or you could do a megasquirt system as well. Go and read the manuals and instructions for all the systems you are looking at to see what might be better suited to you before making a decision.